package com.seeyon.apps.enxicun.utils;

import com.alibaba.fastjson.JSONObject;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

/**
 * @Author yang
 * @Date 2022/2/24 15:14
 * @Version 1.0
 */
public class HttpRequest {

    private static final Log logger = LogFactory.getLog(HttpRequest.class);

    private static String token = "";


    /**
     * 向指定URL发送GET方法的请求
     *
     * @param url   发送请求的URL
     * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return URL 所代表远程资源的响应结果
     */
    public static String sendGet(String url, String param) {
        String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            connection.setRequestProperty("Charset", "UTF-8");
            connection.setRequestProperty("contentType", "application/json");
            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                logger.info(key + "--->" + map.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            logger.info("发送GET请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }

    /**
     * 向指定 URL 发送POST方法的请求
     *
     * @param url   发送请求的 URL
     * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return 所代表远程资源的响应结果
     */
    public static String sendPost(String url, String param) throws Exception {
        logger.info("------向指定的URL,发送POST请求,url使用拼接,所以参数为空------");
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            conn.setRequestProperty("Charset", "UTF-8");
            conn.setRequestProperty("contentType", "application/json");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            out.print(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            logger.info("发送 POST 请求出现异常！" + e);
        }
        //使用finally块来关闭输出流、输入流
        finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException e) {
                logger.error("IOError", e);
            }
        }
        return result;
    }

    /**
     * 发送post请求   需要token
     *
     * @param urls      路径
     * @param jsonParam 参数(json类型参数)
     * @return
     * @throws Exception
     * @throws IOException
     */
    public static String getJsonData(String urls, JSONObject jsonParam, String token) throws Exception {
        StringBuffer sb = new StringBuffer();
        //String token = TokenUtils.getToken();
        try {
            // 创建url资源
            URL url = new URL(urls);
            // 建立http连接
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            // 设置允许输出
            conn.setDoOutput(true);
            // 设置允许输入
            conn.setDoInput(true);
            // 设置不用缓存
            conn.setUseCaches(false);
            // 设置传递方式
            conn.setRequestMethod("POST");
            // 设置维持长连接
            conn.setRequestProperty("Connection", "Keep-Alive");
            // 设置文件字符集:
            conn.setRequestProperty("Charset", "UTF-8");
            // 转换为字节数组
            byte[] data = (jsonParam.toString()).getBytes();
            // 设置文件长度
            conn.setRequestProperty("Content-Length", String.valueOf(data.length));
            // 设置文件类型:
            conn.setRequestProperty("Accept", "application/json");
            conn.setRequestProperty("Content-Type", "application/json");

            // 设置请求头
            conn.setRequestProperty("token", token);
            // 开始连接请求
            conn.connect();
            OutputStream out = new DataOutputStream(conn.getOutputStream());
            // 写入请求的字符串
            out.write((jsonParam.toString()).getBytes());
            out.flush();
            out.close();

            logger.info("请求状态码:" + conn.getResponseCode());

            // 请求返回的状态
            if (HttpURLConnection.HTTP_OK == conn.getResponseCode()) {
                logger.info("请求连接成功");
                // 请求返回的数据
                InputStream in1 = conn.getInputStream();
                try {
                    String readLine = new String();
                    BufferedReader responseReader = new BufferedReader(new InputStreamReader(in1, "UTF-8"));
                    while ((readLine = responseReader.readLine()) != null) {
                        sb.append(readLine).append("\n");
                    }
                    responseReader.close();
                    logger.info("接收返回的数据:" + sb.toString());

                } catch (Exception e1) {
                    e1.printStackTrace();
                }
            } else {
                logger.info("error++");
            }

        } catch (Exception e) {

        }
        return sb.toString();
    }

    /**
     * 发送post请求   不需要token
     *
     * @param urls      路径
     * @param jsonParam 参数(json类型参数)
     * @return
     * @throws Exception
     * @throws IOException
     */
    public static String getJsonData(String urls, String jsonParam) throws Exception {
        StringBuffer sb = new StringBuffer();
        //String token = TokenUtils.getToken();
        try {
            // 创建url资源
            URL url = new URL(urls);
            // 建立http连接
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            // 设置允许输出
            conn.setDoOutput(true);
            // 设置允许输入
            conn.setDoInput(true);
            // 设置不用缓存
            conn.setUseCaches(false);
            // 设置传递方式
            conn.setRequestMethod("POST");
            // 设置维持长连接
            conn.setRequestProperty("Connection", "Keep-Alive");
            // 设置文件字符集:
            conn.setRequestProperty("Charset", "UTF-8");
            // 转换为字节数组
            byte[] data = jsonParam.getBytes();
            // 设置文件长度
            conn.setRequestProperty("Content-Length", String.valueOf(data.length));
            // 设置文件类型:
            conn.setRequestProperty("Accept", "application/json");
            conn.setRequestProperty("Content-Type", "application/json");
            // 开始连接请求
            conn.connect();
            OutputStream out = new DataOutputStream(conn.getOutputStream());
            // 写入请求的字符串
            out.write(jsonParam.getBytes());
            out.flush();
            out.close();

            logger.info("请求状态码:" + conn.getResponseCode());

            // 请求返回的状态
            if (HttpURLConnection.HTTP_OK == conn.getResponseCode()) {
                logger.info("请求连接成功");
                // 请求返回的数据
                InputStream in1 = conn.getInputStream();
                try {
                    String readLine = new String();
                    BufferedReader responseReader = new BufferedReader(new InputStreamReader(in1, "UTF-8"));
                    while ((readLine = responseReader.readLine()) != null) {
                        sb.append(readLine).append("\n");
                    }
                    responseReader.close();
                    logger.info("接收返回的数据:" + sb.toString());

                } catch (Exception e1) {
                    e1.printStackTrace();
                }
            } else {
                logger.info("error++");
            }

        } catch (Exception e) {

        }
        return sb.toString();
    }

}
